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Finding the Fourth Proportional to 437,526.60, 656,289.90 and 400,128.90

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Solution

The fourth proportional to 437,526.60, 656,289.90 and 400,128.90 is: 600,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,526.60 : 656,289.90 = 400,128.90 : x
  2. Step 2: Convert to fraction form
    437,526.60/656,289.90 = 400,128.90/x
  3. Step 3: Cross multiply
    437,526.60x = 656,289.90 × 400,128.90
  4. Step 4: Simplify right side
    437,526.60x = 262,600,555,768.11
  5. Step 5: Solve for x
    x = 262,600,555,768.11/437,526.60
  6. Step 6: Final answer
    x = 600,193.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.